CN108589769B - Construction method of super-long rock-socketed T-shaped combined column plate high retaining wall - Google Patents
Construction method of super-long rock-socketed T-shaped combined column plate high retaining wall Download PDFInfo
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- CN108589769B CN108589769B CN201810427911.0A CN201810427911A CN108589769B CN 108589769 B CN108589769 B CN 108589769B CN 201810427911 A CN201810427911 A CN 201810427911A CN 108589769 B CN108589769 B CN 108589769B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0283—Retaining or protecting walls characterised by constructional features of mixed type
Abstract
The invention relates to a construction method of a super-long rock-socketed T-shaped combined column plate high retaining wall, which comprises the following steps: 1) constructing a pile side pile casing; 2) constructing a pile side reinforcing pier and pile side solidified soil; 3) preparing and installing a retaining wall column template; 4) binding and installing a first reinforcement cage and a second reinforcement cage; 5) pouring concrete into the retaining wall piles and the retaining wall columns; 6) dismantling the retaining wall column formwork; 7) arranging a soil blocking plate; 8) the drain pipe and the reverse filtering cone are arranged; 9) and (5) filling a wall back. The invention has the beneficial effects that: according to the invention, the pile side pile casing is not taken out after the construction of the retaining wall pile is completed, and the inner layer reinforcement cage and the outer layer reinforcement cage are arranged in the retaining wall pile, so that the integrity of the retaining wall pile and the retaining wall column can be greatly improved, and the stress performance of a retaining structure is improved; the retaining wall column formwork can be assembled in sections, the limiting support is arranged on the outer side of the retaining wall column formwork, and the retaining wall column formwork is tightly connected through the tensioning fastening rib bodies, so that the mounting construction efficiency and the mounting quality of the retaining wall column formwork are greatly improved.
Description
Technical Field
The invention relates to a column plate retaining wall construction method, in particular to a construction method of an overlong rock-socketed T-shaped combined column plate high retaining wall, which is convenient to assemble on site, good in structural integrity and high in construction efficiency, belongs to the field of civil engineering, and is suitable for assembly type column plate high retaining wall construction engineering.
Background
Along with the engineering construction process, often meet the construction environment that topography, geology, landform are complicated, in order to reduce the earthwork engineering volume, protect ecological environment, often need to set up some retaining structure thing. The prior wall plate type high retaining wall has the characteristics of quick site construction, low engineering cost and the like compared with other reinforced retaining walls, and is widely applied to civil engineering.
The existing prestressed anchor cable pile plate type retaining wall structure in the prior art comprises a prestressed anchor cable, rib columns and a retaining plate, and is characterized in that the prestressed anchor cable pile plate type retaining wall takes piles as the rib columns, the retaining plate retains soil behind the piles, meanwhile, anchor cables are arranged at proper positions on the piles to enable cantilever piles to be changed into piles with lower ends elastically supported in the ground, and the suspended parts take the anchor cables as the piles of elastic supporting points, so that the piles, the foundation and the anchor cables form a whole. The structure resists horizontal stress generated by engineering load by combining the piles and the prestressed anchor cables, can better solve the problem of engineering stability, but has defects in the aspects of improving the construction efficiency, effectively controlling the engineering quality and the like.
In summary, although the existing construction achieves better construction effect under proper working conditions, the existing construction method is not enough in the aspects of improving the integrity of a soil retaining structure, improving the on-site construction efficiency, improving the installation and construction quality of a retaining wall column template and the like. In view of this, in order to improve the on-site construction quality and efficiency of the combined column plate high retaining wall and improve the stress performance and integrity of a retaining structure, it is urgent to provide a construction method of an ultralong rock-embedded T-shaped combined column plate high retaining wall, which can effectively enhance the integrity of a retaining wall pile and a retaining wall column and between a retaining plate and a retaining wall column, reduce the difficulty of installing a retaining wall column template, and improve the manufacturing accuracy of a retaining wall column reinforcement cage.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the construction method of the ultralong rock-socketed T-shaped combined column plate high retaining wall, which can not only enhance the integrity of the retaining wall pile and the retaining wall column, but also reduce the difficulty in installing the retaining wall column template, and improve the manufacturing precision of the retaining wall column reinforcement cage.
The construction method of the overlong rock-socketed T-shaped combined column plate high retaining wall comprises the following steps:
1) pile side pile casing construction: the top of the side wall of the pile side pile casing is provided with a column bottom platform, the joint of the bottom and the pile side soil is provided with an expanding bottom plate, the outer side wall is provided with a reinforced annular plate, and a first inclined strut is arranged between the expanding bottom plate and the reinforced annular plate; after the pile side pile casing is arranged to a set depth, the verticality of the pile side pile casing is tested;
2) pile side reinforcing pier and pile side solidified soil construction: arranging a pile side reinforcing pier in pile side soil of the pile side pile casing, and enabling the top surface of the pile side reinforcing pier to be exposed out of the ground by 0.5-1.5 m; pile side solidified soil is arranged on the outer side of the pile side pile casing;
3) preparing and installing a retaining wall column template: two connecting lug plates are symmetrically arranged at the joint of the outer walls of the first template assembling section and the second template assembling section of the retaining wall column template, and the retaining wall column templates are connected into a whole through template bolts; then the bottom of the fastening rib body is firmly connected with the column bottom platform, and then the retaining wall column template is hoisted to the column bottom platform, so that the fastening rib body sequentially penetrates through the limiting connecting plates on the outer sides of the retaining wall column template upwards; after the fastening rib body penetrates through the top limiting body and the limiting support of the template, a support limiting hoop plate is arranged on the outer side of the retaining wall column template, the position of the retaining wall column template is corrected, and then the fastening rib body is tensioned to enable the retaining wall column template to be tightly connected; then, arranging a second inclined strut between the retaining wall column template and the pile side solidified soil;
4) binding and installing a first reinforcement cage and a second reinforcement cage: a first reinforcement cage consisting of an inner reinforcement cage and an outer reinforcement cage is arranged in the retaining wall pile, the sizes and the positions of the inner reinforcement cage and the second reinforcement cage are the same, and transverse connecting reinforcements are arranged between the inner reinforcement cage and the outer reinforcement cage; binding a reinforcement cage II on a reinforcement cage jig frame, wherein the reinforcement cage jig frame consists of a jig frame bottom plate and a jig frame vertical plate, a limiting rib penetrating hole is formed in the jig frame vertical plate, the limiting rib is used for limiting the positions of longitudinal reinforcements and stirrups in the reinforcement cage II, and the limiting rib is firmly connected with the jig frame vertical plate through a fastening bolt; after the reinforcement cage II is bound, the bottom of the reinforcement cage II is firmly connected with the inner reinforcement cage of the retaining wall pile, and then the reinforcement cage I and the reinforcement cage II are hung into the cavity of the retaining wall template and the hole of the retaining wall pile;
5) and (3) pouring concrete into the retaining wall piles and the retaining wall columns: pouring concrete of the retaining wall piles and the retaining wall columns from bottom to top in sequence, stopping pouring the concrete when the concrete is poured to a position which is 10 cm-30 cm above the height of the top surface of the retaining wall pile, pumping out the laitance and the concrete to a position which is 20 cm-30 cm below the height of the top surface of the retaining wall pile, pouring the laitance and the concrete for the second time to a position which is 20 cm-50 cm above the height of the top of the retaining wall pile to form a secondary pouring section, and then pouring the concrete of the retaining wall columns;
6) demolishing a retaining wall column formwork: after the retaining wall column concrete is cured until the strength meets the requirement, sequentially removing the second inclined strut, the bracket limiting hoop plate, the fastening rib body, the limiting bracket and the retaining wall column template;
7) the earth-retaining plate is provided with: arranging a retaining plate between adjacent retaining wall columns, and sequentially arranging a reinforced rib plate, a water-resisting layer and a drainage plate between the retaining plate and wall back filler, so that the bottom of the reinforced rib plate is inserted into a rib plate limiting groove at the top of the retaining wall column; the retaining plate is firmly connected with the retaining wall column through the baffle bolt on the outer side of the reinforced rib plate;
8) arranging a drain pipe and a reverse filtering cone: connecting the bottom of the drainage plate with a drainage pipe to enable the drainage pipe to be communicated with a drainage ditch on the outer side of the retaining wall pile, and arranging a reverse filtering cone at the bottom of the wall back filler;
9) and (3) filling a wall back: and performing filling construction of the wall back filler from bottom to top in a layering manner, and performing compaction construction of the wall back filler.
Preferably, the pile side pile casing in the step 1) is made of a steel pile casing and is welded with the column bottom platform, the expanding bottom plate and the reinforced annular plate, and two ends of the inclined strut I are respectively welded with the expanding bottom plate and the reinforced annular plate.
Preferably, the pile side reinforcing pier in the step 2) is prefabricated by adopting reinforced concrete materials, wherein the height of the pile side reinforcing pier is 2-4 m, and the ratio of the height to the diameter of the pile side reinforcing pier is 2-3; the pile side solidified soil is cement solidified soil.
Preferably, the retaining wall column template in the step 3) adopts a steel mould or an aluminum mould, and the cross section of the retaining wall column template is in a T shape; the first template assembling section and the second template assembling section of the retaining wall column template are symmetrical along the center line of the retaining wall column template; the fastening ribs on the limiting connecting plate penetrate through the holes on the same axis; the two ends of the limiting bracket are respectively connected with the column bottom platform and the limiting body at the top of the template.
Preferably, in the step 4), the height of the inner layer reinforcement cage is 1.0-3.0 m, and the top surface elevation is 0.5m higher than that of the outer layer reinforcement cage; the transverse connecting steel bars are bound with the inner layer steel bar cage and the outer layer steel bar cage or are connected with the inner layer steel bar cage and the outer layer steel bar cage in a welding mode.
Preferably, the soil retaining plate in the step 7) is made of a concrete plate, baffle bolt through holes are preset in the soil retaining plate, and a first connecting step is arranged at the joint of the soil retaining plate; the reinforced rib plate is formed by rolling a steel plate; and a second connecting step is arranged at the joint of the retaining wall column and the retaining plate.
The invention has the beneficial effects that:
(1) according to the invention, the pile side pile casing is not taken out after the construction of the retaining wall pile is completed, and the inner layer reinforcement cage and the outer layer reinforcement cage are arranged in the retaining wall pile, so that the integrity of the retaining wall pile and the retaining wall column can be greatly improved, and the stress performance of a retaining structure is improved.
(2) The retaining wall column formwork can be assembled in sections, the limiting support is arranged on the outer side of the retaining wall column formwork, and the retaining wall column formwork is tightly connected through the tensioning fastening rib bodies, so that the mounting construction efficiency and the mounting quality of the retaining wall column formwork are greatly improved.
(3) The concrete of the retaining wall column and the retaining wall pile is poured synchronously, so that the process of treating the top of the retaining wall pile can be omitted, the integrity of the retaining wall column and the retaining wall pile can be greatly improved, and the construction period of a project can be effectively shortened.
(4) The reinforcement cage jig frame is convenient to assemble on site, and the reinforcement cage II of the wall blocking column is prepared on the reinforcement cage jig frame, so that the preparation efficiency and the preparation precision of the reinforcement cage II can be greatly improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the construction of retaining wall piles and retaining wall piles of the ultra-long rock-socketed T-shaped combined column plate high retaining wall of the present invention;
FIG. 2 is a schematic cross-sectional view of the ultra-long rock-socketed T-shaped combined column plate high retaining wall after construction is completed;
FIG. 3 is a schematic diagram of a second reinforcement cage of the retaining wall column of the present invention;
FIG. 4 is a schematic cross-sectional view of a retaining wall stud template of the present invention;
FIG. 5 is a flow chart of the construction process of the ultralong rock-socketed T-shaped combined column plate high retaining wall.
Description of reference numerals: 1-pile side pile casing; 2-column bottom platform; 3-pile side soil; 4-expanding the bottom plate; 5-a reinforced ring plate; 6-bracing one; 7-pile side reinforcing pier; 8-solidifying soil on the pile side; 9-retaining wall column formwork; 10-template assembly section one; 11-template assembly section two; 12-connecting ear plates; 13-template bolts; 14-fastening ribs; 15-a limit connecting plate; 16-a template top limiting body; 17-a limit bracket; 18-bracket limit hoop plate; 19-a second inclined strut; 20-a first reinforcement cage; 21-a reinforcement cage II; 22-inner layer reinforcement cage; 23-outer layer reinforcement cage; 24-transverse connecting steel bars; 25-a steel reinforcement cage jig; 26-bed bottom plate; 27-a jig riser; 28-the limiting rib penetrates through the hole; 29-a limiting rib; 30-fastening bolts; 31-retaining wall piles; 32-retaining wall posts; 33-a secondary perfusion section; 34-a soil guard plate; 35-wall back filling; 36-a ribbed plate; 37-a water barrier layer; 38-a drain plate; 39-rib plate limiting grooves; 40-baffle bolts; 41-a drain pipe; 42-reverse filtering vertebral body; 43-a drainage ditch; 44-the fastening rib passes through the hole; 45-blind bolts pass through holes; 46-longitudinal steel bars; 47-stirrup; 48-connecting step one; 49-connecting step two.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The technical requirements of binding construction of the first reinforcement cage and the second reinforcement cage, the technical requirements of manufacturing and constructing pile side casing, the technical requirements of filling construction of wall back fillers, the technical requirements of hoisting construction of retaining plates, the technical requirements of fastening construction of bolts, concrete design and pouring construction and the like are not repeated in the implementation mode, and the implementation mode of the structure is mainly explained.
Referring to fig. 1 to 4, the invention is characterized in that a column bottom platform 2 is arranged at the top of the side wall of a pile side casing 1, and an expansion bottom plate 4 is arranged at the bottom; the retaining wall column template 9 consists of a template assembly section I10 and a template assembly section II 11, a limiting bracket 17 is arranged on the outer side of the retaining wall column template 9, and the connected retaining wall column templates 9 are tightly connected through tensioning fastening ribs 14; arranging pile side solidified soil 8 and a pile side reinforcing pier 7 on the outer side of the pile side pile casing 1; the size and the position of the inner layer steel reinforcement cage 22 of the retaining wall pile 31 are the same as those of the second steel reinforcement cage 21, and a secondary pouring section 33 is arranged between the retaining wall pile 31 and the retaining wall column 32; arranging a retaining plate 34 between adjacent retaining wall columns 32, and arranging a reinforced rib plate 36, a water-resisting layer 37 and a drainage plate 38 between the retaining plate 34 and the wall back filler 35 in sequence; the steel reinforcement cage bed-jig 25 is composed of a bed-jig bottom plate 26 and a bed-jig riser 27.
The pile side pile casing 1 is made of steel pipe materials with the diameter of 1200mm, the wall thickness of 2mm and the strength grade of Q235, the height of the pile side pile casing 1 is 2m, a column bottom platform 2 is arranged at the top of the side wall of the pile side pile casing 1, the column bottom platform 2 is formed by rolling steel plates with the thickness of 1cm and the strength grade of Q235, the plane size of the column bottom platform is 1.5m × 1.5.5 m, and the column bottom platform is connected with the pile side pile casing 1 in a welding mode.
The pile side soil 3 is strongly weathered sandstone.
The enlarged bottom plate 4 is rolled from a steel plate having a thickness of 2mm and a strength class of Q235, and has a planar size of 2.5m × 2.5.5 m.
The reinforced annular plate 5 is formed by rolling a steel plate with the thickness of 2mm and the strength grade of Q235, the transverse section of the reinforced annular plate is in a circular arc shape, and the inner diameter of the reinforced annular plate is the same as the outer diameter of the pile side pile casing 1.
The first inclined strut 6 and the second inclined strut 19 both adopt H-shaped steel, the specification is 200 × 200, 200 × 8, 8 and 8 × 12mm, and the strength grade is Q235.
The pile-side reinforcing pier 7 employs a concrete pier having a diameter of 1m, a strength grade of C30, and a length of 2 m.
The pile side solidified soil 8 is cement soil with the strength grade of C15.
The retaining wall column formwork 9 comprises a formwork assembly section I10 and a formwork assembly section II 11, and is formed by rolling steel plates with strength grade of Q235 and thickness of 2mm, two connecting lug plates 12 are symmetrically arranged at the connecting position of the formwork assembly section I10 and the outer wall of the formwork assembly section II 11, the connecting lug plates 12 are formed by rolling steel plates with thickness of 1cm and strength grade of Q235, and the formwork bolts 13 with the plane size of 20cm × 20 and 20 cm. are hexagon bolts with the diameter of 30 mm.
The fastening rib body 14 adopts a screw rod with the diameter of 20mm, and the bottom of the fastening rib body is connected with the column bottom platform 2.
The limiting connecting plate 15 is formed by rolling a steel plate with the thickness of 1cm and the strength grade of Q235, and the plane size is 20cm × 20 cm.
The template top limiting body 16 is formed by rolling a steel plate with the thickness of 5cm and the strength grade of Q235, and the plane size is 20cm × 20 cm.
The width of the limiting bracket 17 is 20cm, and the limiting bracket is formed by rolling a steel plate with the thickness of 1cm and the strength grade of Q235. The width of the bracket limiting hoop plate 18 is 10cm, and the bracket limiting hoop plate is formed by rolling a steel plate with the thickness of 1cm and the strength grade of Q235.
The section forms of the first reinforcement cage 20 and the inner reinforcement cage 22 of the second reinforcement cage 21 are the same, and the longitudinal reinforcements 46 and the stirrups 47 of the first reinforcement cage and the second reinforcement cage respectively adopt threaded reinforcements with the diameters of 32mm and 12 mm.
The outer layer reinforcement cage 23 is arranged on the outer side of the inner layer reinforcement cage 22 and connected with the inner layer reinforcement cage 22 through a transverse connecting reinforcement 24, and the transverse connecting reinforcement 24 is a twisted reinforcement with the diameter of 32 mm.
The steel reinforcement cage jig frame 25 is composed of a jig frame bottom plate 26 and a jig frame vertical plate 27, wherein the jig frame bottom plate 26 is formed by rolling a steel plate with the thickness of 1cm and the strength grade of Q235, the jig frame vertical plate 27 is made of H-shaped steel and is 200 × 200 × 8 × 12mm in specification, a limiting rib penetrating hole 28 is formed in the jig frame vertical plate 27, the hole diameter of the limiting rib penetrating hole 28 is 50mm, the limiting rib 29 is made of smooth steel bars with the diameter of 20mm, the end of the limiting rib is drawn, and the thread diameter of a fastening bolt 30 is matched with that of the limiting rib 29.
The diameter of the retaining wall pile 31 is 1000mm, and the concrete strength grade is C35.
The retaining wall column 32 is T-shaped, the thickness of the middle part is 600mm, the thickness of the edge is 300mm, the width is 1000mm, and the concrete strength grade is C35.
The height of the secondary pouring section 33 is 1m, and the concrete strength grade is C35.
The height of the retaining plate 34 is 1m, the thickness is 150mm, and the width and the height of the connecting step I48 arranged at the two end parts are both 75 mm; the second connecting step 49 has the same shape as the first connecting step 48.
The wall back filler 35 is made of sandy soil.
The ribbed plate 36 is rolled from a steel plate having a thickness of 2mm and a strength rating of Q235, and has a width of 20cm,
the waterproof layer 37 is made of waterproof soil film material; the drainage plate 38 is made of drainage geotextile.
The rib plate limiting groove 39 is 1cm wide, 25cm long and 20cm deep.
The baffle bolt 40 is a stainless steel expansion bolt with a diameter of 20 mm.
The drain pipe 41 is a drain hose having a diameter of 100 mm.
The reverse filtering cone 42 uses well-graded crushed stone with a maximum grain size of 20 cm.
The drainage ditch 43 has a trapezoidal cross section, a bottom width of 0.5m, a top width of 1.5m and a height of 0.5 m.
The diameter of the fastening rib body through hole 44 and the diameter of the baffle bolt through hole 45 are both 30 mm.
Referring to fig. 5, the construction method of the ultralong rock-socketed T-shaped combined column plate high retaining wall comprises the following construction steps:
1) construction of the pile side pile casing 1: the top of the side wall of the pile side pile casing 1 is provided with a column bottom platform 2, the joint of the bottom and pile side soil 3 is provided with an expanding bottom plate 4, the outer side wall is provided with a reinforced annular plate 5, and a diagonal brace I6 is arranged between the expanding bottom plate 4 and the reinforced annular plate 5; after the pile side pile casing 1 is arranged to a set depth, the verticality of the pile side pile casing 1 is tested;
2) constructing a pile side reinforcing pier 7 and pile side solidified soil 8: arranging a pile side reinforcing pier 7 in the pile side soil 3 of the pile side pile casing 1, and exposing the top surface of the pile side reinforcing pier 7 to the ground by 0.5-1.5 m; pile side solidified soil 8 is arranged on the outer side of the pile side pile casing 1;
3) preparing and installing a retaining wall column template 9: two connecting lug plates 12 are symmetrically arranged at the joint of the first template assembly section 10 and the second template assembly section 11 of the retaining wall column template 9, and the retaining wall column templates 9 are connected into a whole through template bolts 13; then the bottom of the fastening rib body 14 is firmly connected with the column bottom platform 2, and then the retaining wall column template 9 is hoisted to the column bottom platform 2, so that the fastening rib body 14 sequentially penetrates through the limiting connecting plates 15 on the outer side of the retaining wall column template 9 upwards; after the fastening rib bodies 14 penetrate through the template top limiting bodies 16 and the limiting brackets 17, the bracket limiting hoop plates 18 are arranged on the outer sides of the retaining wall column templates 9, the positions of the retaining wall column templates 9 are corrected, and then the fastening rib bodies 14 are tensioned to enable the retaining wall column templates 9 to be tightly connected; then, a second inclined strut 19 is arranged between the retaining wall column template 9 and the pile side solidified soil 8;
4) binding and installing a first reinforcement cage 20 and a second reinforcement cage 21: a first reinforcement cage 20 consisting of an inner reinforcement cage 22 and an outer reinforcement cage 23 is arranged in the retaining wall pile 31, the sizes and the positions of the inner reinforcement cage 22 and the second reinforcement cage 21 are the same, and transverse connecting reinforcements 24 are arranged between the inner reinforcement cage 22 and the outer reinforcement cage 23; the reinforcement cage II 21 is bound on a reinforcement cage jig 25, the reinforcement cage jig 25 consists of a jig bottom plate 26 and a jig vertical plate 27, a limiting rib penetrating hole 28 is formed in the jig vertical plate 27, the limiting rib 29 is used for limiting the positions of a longitudinal reinforcement bar 46 and a hoop reinforcement bar 47 in the reinforcement cage II 21, and the limiting rib 29 is firmly connected with the jig vertical plate 27 through a fastening bolt 30; after the reinforcement cage II 21 is bound, the bottom of the reinforcement cage II 21 is firmly connected with the inner reinforcement cage 22 of the retaining wall pile 31, and then the reinforcement cage I20 and the reinforcement cage II 21 are hung in the cavity of the retaining wall template and the hole of the retaining wall pile 31;
5) concrete pouring of the retaining wall piles 31 and 32: pouring concrete into the retaining wall piles 31 and 32 from bottom to top, stopping pouring the concrete when the concrete is poured to 10-30 cm above the elevation of the top surfaces of the retaining wall piles 31, removing the laitance and the concrete to 20-30 cm below the elevation of the top surfaces of the retaining wall piles 31, pouring the concrete again to 20-50 cm above the elevation of the top surfaces of the retaining wall piles 31 to form secondary pouring sections 33, and then pouring the concrete into the retaining wall piles 32;
6) demolishing the retaining wall column formwork 9: after the retaining wall column 32 concrete is cured until the strength meets the requirement, the second inclined strut 19, the bracket limiting hoop plate 18, the fastening rib body 14, the limiting bracket 17 and the retaining wall column template 9 are sequentially removed;
7) the retaining plate 34 is provided with: arranging a retaining plate 34 between adjacent retaining wall columns 32, and arranging a reinforced rib plate 36, a water-resisting layer 37 and a drainage plate 38 between the retaining plate 34 and the wall back filler 35 in sequence, so that the bottom of the reinforced rib plate 36 is inserted into a rib plate limiting groove 39 at the top of the retaining wall column 31; the retaining plate 34 is firmly connected with the retaining wall column 32 through the baffle bolt 40 outside the reinforced rib plate 36;
8) the water drain pipe 41 and the reverse filter cone 42 are arranged: connecting the bottom of the drainage plate 38 with a drainage pipe 41, so that the drainage pipe 41 is communicated with a drainage ditch 43 outside the retaining wall pile 31, and arranging a reverse filtering cone 42 at the bottom of the wall back filler 35;
9) and (3) filling a wall back: and performing filling construction of the wall back filler 35 from bottom to top in sequence in a layering manner, and performing compaction construction of the wall back filler 35.
Claims (6)
1. A construction method of a super-long rock-socketed T-shaped combined column plate high retaining wall is characterized by comprising the following construction steps:
1) construction of a pile side pile casing (1): the top of the side wall of the pile side pile casing (1) is provided with a column bottom platform (2), the joint of the bottom and the pile side soil (3) is provided with an expanding bottom plate (4), the outer side wall is provided with a reinforced annular plate (5), and a diagonal brace I (6) is arranged between the expanding bottom plate (4) and the reinforced annular plate (5); after the pile side pile casing (1) is arranged to a set depth, the verticality of the pile side pile casing (1) is tested;
2) constructing a pile side reinforcing pier (7) and pile side solidified soil (8): arranging a pile side reinforcing pier (7) in pile side soil (3) of the pile side pile casing (1) to enable the top surface of the pile side reinforcing pier (7) to be exposed out of the ground by 0.5-1.5 m; pile side solidified soil (8) is arranged on the outer side of the pile side pile casing (1);
3) preparing and installing a retaining wall column template (9): two connecting lug plates (12) are symmetrically arranged at the joint of the first template assembly section (10) and the second template assembly section (11) of the retaining wall column template (9), and the retaining wall column templates (9) are connected into a whole through template bolts (13); then the bottom of the fastening rib body (14) is firmly connected with the column bottom platform (2), and then the retaining wall column template (9) is hoisted to the column bottom platform (2), so that the fastening rib body (14) sequentially penetrates through the limiting connecting plates (15) on the outer side of the retaining wall column template (9) upwards; after the fastening rib bodies (14) penetrate through the template top limiting bodies (16) and the limiting brackets (17), the bracket limiting hoop plates (18) are arranged on the outer sides of the retaining wall column templates (9), the positions of the retaining wall column templates (9) are corrected, and then the fastening rib bodies (14) are tensioned to enable the retaining wall column templates (9) to be connected compactly; then, arranging a second inclined strut (19) between the retaining wall column template (9) and the pile side solidified soil (8);
4) binding and installing a first reinforcement cage (20) and a second reinforcement cage (21): a first reinforcement cage (20) consisting of an inner reinforcement cage (22) and an outer reinforcement cage (23) is arranged in the retaining wall pile (31), the sizes and the positions of the inner reinforcement cage (22) and the second reinforcement cage (21) are the same, and transverse connecting reinforcements (24) are arranged between the inner reinforcement cage (22) and the outer reinforcement cage (23); the reinforcement cage II (21) is bound on a reinforcement cage jig (25), the reinforcement cage jig (25) consists of a jig bottom plate (26) and a jig vertical plate (27), a limiting rib is arranged on the jig vertical plate (27) to penetrate through a hole (28), the positions of longitudinal reinforcements (46) and stirrups (47) in the reinforcement cage II (21) are limited by the limiting rib (29), and the limiting rib (29) is firmly connected with the jig vertical plate (27) through a fastening bolt (30); after the reinforcement cage II (21) is bound, the bottom of the reinforcement cage II (21) is firmly connected with the inner reinforcement cage (22) of the retaining wall pile (31), and then the reinforcement cage I (20) and the reinforcement cage II (21) are hung into the cavity of the retaining wall template and the hole of the retaining wall pile (31);
5) and (3) concrete pouring of the retaining wall piles (31) and the retaining wall columns (32): pouring concrete of the retaining wall pile (31) and the retaining wall column (32) from bottom to top in sequence, stopping pouring the concrete when the concrete is poured to be 10 cm-30 cm above the elevation of the top surface of the retaining wall pile (31), removing the laitance and the concrete to be 20 cm-30 cm below the elevation of the top surface of the retaining wall pile (31), pouring the concrete again to be 20 cm-50 cm above the elevation of the top surface of the retaining wall pile (31) to form a secondary pouring section (33), and then pouring the concrete of the retaining wall column (32);
6) dismantling the retaining wall column template (9): after concrete of the retaining wall column (32) is cured until the strength meets the requirement, sequentially removing the second inclined strut (19), the bracket limiting hoop plate (18), the fastening rib body (14), the limiting bracket (17) and the retaining wall column template (9);
7) the retaining plate (34) is provided with: arranging a retaining plate (34) between adjacent retaining wall columns (32), and arranging a reinforced rib plate (36), a water-resisting layer (37) and a drainage plate (38) between the retaining plate (34) and a wall back filler (35) in sequence, so that the bottom of the reinforced rib plate (36) is inserted into a rib plate limiting groove (39) at the top of the retaining wall column (31); the retaining plate (34) is firmly connected with the retaining wall column (32) through a baffle bolt (40) on the outer side of the reinforced rib plate (36);
8) the water drainage pipe (41) and the reverse filtering cone body (42) are arranged as follows: connecting the bottom of the drainage plate (38) with a drainage pipe (41), communicating the drainage pipe (41) with a drainage ditch (43) on the outer side of the retaining wall pile (31), and arranging a reverse filter cone body (42) at the bottom of the wall back filler (35);
9) and (3) filling a wall back: and (3) carrying out filling construction on the wall back filler (35) layer by layer from bottom to top, and carrying out compaction construction on the wall back filler (35).
2. The construction method of the overlong socketed T-shaped combined column plate high retaining wall as claimed in claim 1, wherein: step 1) the pile side pile casing (1) is made of a steel pile casing and is in welded connection with the column bottom platform (2), the expanding bottom plate (4) and the reinforced annular plate (5), and two ends of the inclined strut I (6) are in welded connection with the expanding bottom plate (4) and the reinforced annular plate (5) respectively.
3. The construction method of the overlong socketed T-shaped combined column plate high retaining wall as claimed in claim 1, wherein: step 2), the height of the pile side reinforcing pier (7) is 2-4 m, the ratio of the height to the diameter is 2-3, and the pile side reinforcing pier is prefabricated by adopting reinforced concrete materials; the pile side solidified soil (8) is cement solidified soil.
4. The construction method of the overlong socketed T-shaped combined column plate high retaining wall as claimed in claim 1, wherein: step 3), adopting a steel mould or an aluminum mould to form the retaining wall column template (9), wherein the cross section of the retaining wall column template is in a T shape; the first template assembling section (10) and the second template assembling section (11) of the retaining wall column template (9) are symmetrical along the center line of the retaining wall column template (9); the fastening rib bodies on the limiting connecting plate (15) pass through the holes (44) on the same axis; two ends of the limiting bracket (17) are respectively connected with the column bottom platform (2) and the template top limiting body (16).
5. The construction method of the overlong socketed T-shaped combined column plate high retaining wall as claimed in claim 1, wherein: step 4), the height of the inner layer reinforcement cage (22) is 1.0-3.0 m, and the top surface elevation is 0.5m higher than that of the outer layer reinforcement cage (23); the transverse connecting steel bars (24) are bound with the inner layer steel bar cage (22) and the outer layer steel bar cage (23) or are connected by welding.
6. The construction method of the overlong socketed T-shaped combined column plate high retaining wall as claimed in claim 1, wherein: step 7), adopting a concrete slab as the retaining plate (34), presetting a baffle bolt through hole (45) on the retaining plate (34), and arranging a first connecting step (48) at the joint of the retaining plate (34); the reinforced rib plate (36) is formed by rolling a steel plate; and a second connecting step (49) is arranged at the joint of the retaining wall column (32) and the retaining plate (34).
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| CN201810427911.0A CN108589769B (en) | 2018-05-07 | 2018-05-07 | Construction method of super-long rock-socketed T-shaped combined column plate high retaining wall |
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| CN201810427911.0A CN108589769B (en) | 2018-05-07 | 2018-05-07 | Construction method of super-long rock-socketed T-shaped combined column plate high retaining wall |
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| CN108589769B true CN108589769B (en) | 2020-07-03 |
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| CN110130212A (en) * | 2019-04-18 | 2019-08-16 | 广州容联建筑科技有限公司 | A kind of assembled steel reinforced concrete pier and its construction method |
| CN110409491A (en) * | 2019-08-07 | 2019-11-05 | 上海建工二建集团有限公司 | Stake plate type retaining wall one-piece casting formwork structure and its construction method |
| CN113529786B (en) * | 2021-08-10 | 2022-12-16 | 福州市勘测院有限公司 | Garbage filling and mountain-piling supporting and retaining structure and construction method |
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| KR100671959B1 (en) * | 2005-06-15 | 2007-01-19 | 안승한 | Construction method of retaining wall |
| CN200974972Y (en) * | 2006-10-26 | 2007-11-14 | 陆见华 | T-shaped concrete caisson pile mould |
| CN104358273B (en) * | 2014-10-13 | 2015-12-30 | 杭州江润科技有限公司 | A kind of construction method of in-situ deposited prefabricated combined retaining wall structure |
| CN104727307B (en) * | 2015-02-03 | 2016-04-13 | 合肥市市政设计院有限公司 | For the non-uniform pile column construction method of underground |
| CN105421485B (en) * | 2015-10-30 | 2017-05-10 | 杭州市交通规划设计研究院 | Construction method of high-fill prefabricated cast-in-situ combined pile slab wall protection structure |
| JP6632028B2 (en) * | 2016-06-05 | 2020-01-15 | 六郎 海野 | Concrete assembly retaining wall |
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